I have got a problem when I using multiple files in C++

Question

I have compiled person.h and person1.cpp files successfully. But when I add player1.h and player1.cpp files in my code I get an error.

My main function is:

#include <iostream>
#include "person1.cpp"

using namespace std;

int main(){

    Person person1("Metehan Gencer", 100, "Bahcelievler Mah. Hayyam1 Sok. Huzur Apt.");
    cout << "person : " << person1 << endl;

    return 0;
}

person1.h

#ifndef PERSON1_H_INCLUDED
#define PERSON1_H_INCLUDED

#include <string>

#include <string_view>

using namespace std;

// Base Class
class Person
{
    friend ostream& operator<<(ostream&, const Person& person);
public:
    Person() = default;
    Person(string_view fullname, int age, const string address);
    ~Person();

    // Getters
    string get_full_name()const{
        return m_full_name;
    }

    int get_age()const{
        return m_age;
    }

    string get_address()const{
        return m_address;
    }

public:
    string m_full_name{"None"};
protected:
    int m_age{0};
public:
    string m_address{"None"};
};

#endif // PERSON1_H_INCLUDED

person1.cpp

#include <iostream>
#include "person1.h"
using namespace std;

Person::Person(string_view fullname, int age, const string address)
    : m_full_name{fullname}, m_age{age}, m_address{address} {}

ostream& operator<<(ostream& out, const Person& person){
    out << "Person [Full name : " << person.get_full_name() << ", Age: " << person.get_age() << ",          Address: " << person.get_address() << "]";
    return out;
}

Person::~Person()
{}

The Code running as this. But when I add player1.cpp and player1.h files I get an error like this: fatal error: person1.h: No such file or directory| ||=== Build failed: 1 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

player1.h

#ifndef PLAYER1_H_INCLUDED
#define PLAYER1_H_INCLUDE D

//#include <person1.h>

// Player will do public inheritance form Person
class Player : public Person
{
    friend ostream& operator<<(ostream& out, const Player& player);
public:
    Player();
    ~Player();

    // See the access we have to inherited members from Person
    void play(){
        m_full_name = "John Snow";  // OK
        m_age = 55;                 // OK
        m_address = "ASDFGH;SADFSDG;JHYUKH0";
    }
private:
    int m_career_start_year{0};
    double m_salary{0.0};
    int health_factor{0};   // Let's say that it's 0~10
};

#endif // PLAYER1_H_INCLUDED

player1.cpp

#include <iostream>
#include <person1.h>
#include <player1.h>
using namespace std;

Player::Player() {}

ostream& operator<<(ostream& out, const Player& player){
    out << "Player[Full name : " << player.get_full_name() << ", age : " << player.get_age() << ",   address : " << player.get_address() << "]";
        return out;
}

Player::~Player() {}